Quote Originally Posted by 'Greythan',index.php?page=Thread&postID=193318#pos t193318
Puppy, have you tested the /castsequence arcane/fire spec on a test dummy agaisnt a straight frostbolt spam from a frost spec? I've specced frost largely because I think its the most multi-box friendly. (Summon Water Elemental and spam frostbolt, drop in a mirror image/focus magic from time to time for spiked damage)

I had originally been fire and miss the big crits, but trying to stack scorches and watch for Hot Streaks made me go frost. Never specced arcane.
I was frost for most of TBC but haven't spec'd it at all for WOTLK. Its not at all competitive in DPS for PVE, arcane and fire beat it by quite a wide margin. Frost is of course an awesome arena spec.

My tank was a deathknight, and I don't believe the frost 10% spell dmg boost stacks with a unholy DKs 13% spell damage boost. WIth a mostly shaman team mana is never an issue so replenishment wasn't a big deal.

I think for a multiboxer arcane or frost are both perfectly good specs, I don't think fire is that great (FFB cast time too long, scorch wasted on trash, too hard to get hot streak procs worked in). If however you want to also solo play your mage then arcane is a better spec, since an arcane mage will do a much better job when solo raiding in naxx.

With dual specs a lot of this will change of course, I'll probably go arcane or frost spec for PVP/trash/multiboxing and fire (18/53/0 -- FFB is pretty much a dead spec in 3.1) for bosses.